Refactor org/repo validation for clarity and consistency

Author: AakashSuresh2003

src/gei/Commands/MigrateRepo/MigrateRepoCommandArgs.cs

@@ -97,7 +97,7 @@ public override void Validate(OctoLogger log)
             {
                 throw new OctoshiftCliException("The --use-github-storage flag was provided with a connection string for an Azure storage account. Archive cannot be uploaded to both locations.");
             }
-            ValidateOrgAndRepoNames(); return;
+            ValidateOrgAndRepoNames();
         }
 
         private void DefaultTargetRepo(OctoLogger log)
@@ -119,19 +119,19 @@ private void DefaultSourcePat(OctoLogger log)
         }
         private void ValidateOrgAndRepoNames()
         {
-            if (!string.IsNullOrWhiteSpace(GithubSourceOrg) && Uri.IsWellFormedUriString(GithubSourceOrg, UriKind.Absolute))
+            if (GithubSourceOrg.HasValue() && Uri.IsWellFormedUriString(GithubSourceOrg, UriKind.Absolute))
             {
                 throw new OctoshiftCliException("GithubSourceOrg should be an org name, not a URL.");
             }
-            if (!string.IsNullOrWhiteSpace(GithubTargetOrg) && Uri.IsWellFormedUriString(GithubTargetOrg, UriKind.Absolute))
+            if (GithubTargetOrg.HasValue() && Uri.IsWellFormedUriString(GithubTargetOrg, UriKind.Absolute))
             {
                 throw new OctoshiftCliException("GithubTargetOrg should be an org name, not a URL.");
             }
-            if (!string.IsNullOrWhiteSpace(SourceRepo) && Uri.IsWellFormedUriString(SourceRepo, UriKind.Absolute))
+            if (SourceRepo.HasValue() && Uri.IsWellFormedUriString(SourceRepo, UriKind.Absolute))
             {
                 throw new OctoshiftCliException("SourceRepo should be a repo name, not a URL.");
             }
-            if (!string.IsNullOrWhiteSpace(TargetRepo) && Uri.IsWellFormedUriString(TargetRepo, UriKind.Absolute))
+            if (TargetRepo.HasValue() && Uri.IsWellFormedUriString(TargetRepo, UriKind.Absolute))
             {
                 throw new OctoshiftCliException("TargetRepo should be a repo name, not a URL.");
             }